Search results

Dataset.map crashes when first examples return None and later examples return dict — writer not initialized

Status: Open.

#7990�?In huggingface/datasets;

· meta-program opened on Feb 4, 2026

<code>Dataset.map()</code> breaks when <code>function</code> calls <code>import polars as pl</code> and <code>num_proc</code>&gt;1: "UnboundLocalError: cannot access local variable 'pl' where it is not associated with a value"

Status: Open.

#7988�?In huggingface/datasets;

· ligz08 opened on Feb 4, 2026

<code>Dataset.map()</code> causes cache miss/fingerprint change when closure captures self containing non-deterministic state.

Status: Open.

#7986�?In huggingface/datasets;

· Cloud0310 opened on Feb 3, 2026

Data

Status: Open.

#7984�?In huggingface/datasets;

· iLenceJhay opened on Feb 3, 2026

cast_column(..., Audio) fails with load_dataset("csv",)

Status: Open.

#7970�?In huggingface/datasets;

· jstangroome opened on Jan 29, 2026

Potential conflicting type checks and dead code in <code>/src/datasets/table.py</code>

Status: Open.

#7968�?In huggingface/datasets;

· rc4typecheck opened on Jan 28, 2026

[CUDA Tensors Not working in ~v4.5.0] set_format(type="torch", device="cuda") returns cpu

Status: Open.

#7958�?In huggingface/datasets;

· ai-nikolai opened on Jan 23, 2026

Is the 10k files / folder limit a hard limit for a dataset repo?

enhancementNew feature or requestNew feature or request

Status: Open.

#7956�?In huggingface/datasets;

· pavanramkumar opened on Jan 21, 2026

all_exhausted_without_replacement working same as first_exhausted

Status: Open.

#7954�?In huggingface/datasets;

· prathamk-tw opened on Jan 21, 2026

MMLU get_dataset_config_names provides different lists of subsets in online and offline modes

Status: Open.

#7947�?In huggingface/datasets;

· rikrd opened on Jan 16, 2026

Question: Is there a faster way to push_to_hub for large image datasets?

Status: Open.

#7946�?In huggingface/datasets;

· adithya-s-k opened on Jan 15, 2026

datasets.load_from_disk progress bar optional manual control

enhancementNew feature or requestNew feature or request

Status: Open.

#7939�?In huggingface/datasets;

· Tommigun1980 opened on Jan 13, 2026